This is very strange. I just copied all the binary files from one server to another. The new server comes up just fine with one exception. I keep getting this error message in my log every couple minutes...
2018-09-06T01:27:56.710923Z 284261 [ERROR] InnoDB: Column table_name in table `mysql`.`innodb_table_stats` is VARCHAR(576) NOT NULL but should be VARCHAR(192) NOT NULL (length mismatch). 2018-09-06T01:27:56.711052Z 284261 [ERROR] InnoDB: Fetch of persistent statistics requested for table `mydatabase`.`mytable` but the required system tables mysql.innodb_table_stats and mysql.innodb_index_stats are not present or have unexpected structure. Using transient stats instead.
Now I know for a fact that the error is bogus. I have used ALTER TABLE to change the field size all the way down to 64 and the exact same error shows. So i dropped the table and I get the error that the table is missing as expected. Then I create the table with the proper length and this error comes back. It always says the field is 576 characters no matter what the actual size is. And it is only this one field and one table. None of the other innodb_ tables are coming up with an error. And running a database check says all the tables are correct but the log loads up with this error as each table gets checked.
For the life of me, I can't think of anything else to do. Any help out there?
MySQL version: 5.7.22
Script used to drop and rebuild the table run one line at a time checking the log each time.
drop TABLE if exists `innodb_table_stats`; CREATE TABLE if not exists `innodb_table_stats` ( `database_name` varchar(64) COLLATE utf8_bin NOT NULL, `table_name` varchar(192) COLLATE utf8_bin NOT NULL, `last_update` timestamp NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP, `n_rows` bigint(20) unsigned NOT NULL, `clustered_index_size` bigint(20) unsigned NOT NULL, `sum_of_other_index_sizes` bigint(20) unsigned NOT NULL, PRIMARY KEY (`database_name`,`table_name`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_bin STATS_PERSISTENT=0; flush tables;